Huawei SmartGuard-63A-S0 User Manual page 56

SmartGuard-63A-(S0, AUS0)
User Manual
Procedure
Step 1 (Optional) Connect the heat pump control signal cable.
Issue 03 (2023-12-27)
Definition Function
485B1 RS485A, RS485 differential
signal–
485A2 RS485B, RS485 differential
signal+
485B2 RS485A, RS485 differential
signal–
DI1+ Digital input signal 1+
DI1– Digital input signal 1–
DI2+ Digital input signal 2+
DI2– Digital input signal 2–
12V_OUT+ 12 V power output+
12V_OUT– 12 V power output–
NO1 Digital output signal
COM1 Digital output signal
NO2 Digital output signal
COM2 Digital output signal
NO TE
When the SG Ready heat pump provides 12 V power supply, the EMMA directly controls the
heat pump. When the SG Ready heat pump cannot provide 12 V power supply, the EMMA
controls the heat pump through an external relay.
Copyright © Huawei Digital Power Technologies Co., Ltd.
5 Electrical Connections
Description
Reserved for connecting to
third-party devices
Reserved for connecting to
the mains detection signal
port on the ATS
Reserved for connecting to
the genset alarm signal
port or ATS genset
detection signal port
Optional. 12 V power
output ports of the EMMA,
which support 100 mA
load, output voltage of
9.5–13.2 V, and 12 V@30
mA capability of driving
the external relay coil. The
external relay works with
NO1 and COM1 to control
the SG Ready heat pump.
Optional. SG Ready heat
pump control signal ports,
which support a maximum
of 12 V signal voltage and
a maximum contact output
capability of 12 V DC@1 A.
The NO and COM contacts
are normally open and
COM is a common point.
Reserved
50